Bispyribac sodium is a selective, systemic and post emergent herbicide used to eradicate grasses and broad leaf weeds. Bispyribac sodium is also an acetolactate synthase (ALS or known as AHAS) inhibitor[1].
References:
[1]. Ahmad F, Anwar S, Firdous S, Da-Chuan Y, Iqbal S. Biodegradation of bispyribac sodium by a novel bacterial consortium BDAM: Optimization of degradation conditions using response surface methodology. J Hazard Mater. 2018;349:272-281.